Load Specifications
Load data in caliber .338 ARC with .338 | 225gr | Remington PSP bullet and 24 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ADI AR 2207, Norma 200 and Alliant Reloder-7.
Important Notice: DO NOT go below Minimum Charge or above Maximum Charge. Since we have no control over the equipment and components used, any responsibility and liability for the results achieved is rejected.
Only powders/loads that match the current filter criteria are displayed: max pressure of a load ≤ 90% of max. standardized pressure, fill rate ≥ 80% and propellant combustion ≥ 95%. Use the sliders above the tables to adjust these thresholds.
Charge: Powder weight in grains. Start with the minimum load and work up carefully.
FR (Fill Rate): Case fill as a percentage. Values above 100% mean compressed loads.
MaxP / %: Maximum chamber pressure in bar and as a percentage of the standardized maximum for this caliber.
V(0): Muzzle velocity in feet per second (fps) at the standardized barrel length.
z (Powder Burn): Estimated propellant combustion percentage at bullet exit.
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Max Load - Barrel Length: 16"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 90% | 44,875 psi | 86% | 1814 fps | 98.1% |
| Accurate LT-30 | <<locked>> | 96% | 45,600 psi | 88% | 1808 fps | 95.6% |
| ADI AR 2205 | <<locked>> | 82% | 45,788 psi | 88% | 1745 fps | 100% |
| ADI AR 2207 | <<locked>> | 96% | 45,643 psi | 88% | 1883 fps | 100% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 34,287 psi | 66% | 1778 fps | 96.6% |
| Alliant Reloder-10xᴾ | <<locked>> | 100% | 42,409 psi | 82% | 1867 fps | 97.9% |
| Alliant Reloder-7 | <<locked>> | 94% | 45,745 psi | 88% | 1857 fps | 98.8% |
| Baschieri & Pellagri 106 | <<locked>> | 98% | 45,498 psi | 87% | 1834 fps | 95.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 29,965 psi | 58% | 1109 fps | 100% |
| IMR 4198ᴾ | <<locked>> | 100% | 45,890 psi | 88% | 1864 fps | 99.1% |
| IMR 4227 | <<locked>> | 88% | 45,556 psi | 88% | 1811 fps | 99.8% |
| Lovex D060 | <<locked>> | 82% | 46,369 psi | 89% | 1831 fps | 99% |
| Lovex D063 | <<locked>> | 82% | 46,296 psi | 89% | 1818 fps | 99.4% |
| Lovex S053 | <<locked>> | 90% | 46,296 psi | 89% | 1811 fps | 100% |
| Norma 200 | <<locked>> | 98% | 45,136 psi | 87% | 1893 fps | 98.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 29,660 psi | 57% | 1135 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 90% | 46,760 psi | 90% | 1860 fps | 99.8% |
| Shooters World Buffalo Rifle | <<locked>> | 82% | 46,369 psi | 89% | 1831 fps | 99% |
| Shooters World SOCOM | <<locked>> | 82% | 46,296 psi | 89% | 1818 fps | 99.4% |
| SNPE Vectan BA6 1/2 | <<locked>> | 92% | 44,991 psi | 87% | 1699 fps | 100% |
| SNPE Vectan SP 3ᴾ | <<locked>> | 100% | 44,324 psi | 85% | 1870 fps | 96.2% |
| Vihtavuori N110 | <<locked>> | 84% | 45,977 psi | 88% | 1752 fps | 100% |
| Vihtavuori N120 | <<locked>> | 96% | 45,890 psi | 88% | 1857 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 41,510 psi | 80% | 1804 fps | 97.3% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 16"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 82% | 34,824 psi | 67% | 1673 fps | 95.6% |
| Accurate LT-30 | <<locked>> | 94% | 43,149 psi | 83% | 1778 fps | 95% |
| ADI AR 2205 | <<locked>> | 80% | 43,294 psi | 83% | 1716 fps | 100% |
| ADI AR 2207 | 20.9 gr | 80% | 28,079 psi | 54% | 1617 fps | 97.6% |
| Alliant AR-Comp | <<locked>> | 98% | 32,430 psi | 62% | 1742 fps | 95.9% |
| Alliant Reloder-10x | <<locked>> | 92% | 33,373 psi | 64% | 1729 fps | 95.4% |
| Alliant Reloder-7 | 22.2 gr | 82% | 31,691 psi | 61% | 1650 fps | 95.4% |
| Baschieri & Pellagri 106 | <<locked>> | 96% | 42,757 psi | 82% | 1798 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 21,886 psi | 42% | 988 fps | 100% |
| IMR 4198 | <<locked>> | 86% | 31,285 psi | 60% | 1640 fps | 95.5% |
| IMR 4227 | <<locked>> | 80% | 35,737 psi | 69% | 1677 fps | 98.5% |
| Lovex D060 | <<locked>> | 80% | 43,381 psi | 83% | 1791 fps | 98.6% |
| Lovex D063 | <<locked>> | 80% | 43,294 psi | 83% | 1778 fps | 99.1% |
| Lovex S053 | <<locked>> | 80% | 34,911 psi | 67% | 1663 fps | 99.9% |
| Norma 200 | 23.6 gr | 86% | 31,604 psi | 61% | 1693 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 21,799 psi | 42% | 1014 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 34,577 psi | 66% | 1693 fps | 98.1% |
| Shooters World Buffalo Rifle | <<locked>> | 80% | 43,381 psi | 83% | 1791 fps | 98.6% |
| Shooters World SOCOM | <<locked>> | 80% | 43,294 psi | 83% | 1778 fps | 99.1% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 33,054 psi | 64% | 1555 fps | 100% |
| SNPE Vectan SP 3 | <<locked>> | 98% | 41,945 psi | 81% | 1837 fps | 95.5% |
| Vihtavuori N110 | <<locked>> | 80% | 41,234 psi | 79% | 1699 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 28,369 psi | 55% | 1604 fps | 98.7% |
| Vihtavuori N130 | <<locked>> | 94% | 34,751 psi | 67% | 1709 fps | 95.4% |
Recommended = one of the top powders for this cartridge and bullet combination.
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 38 powders for .338 ARC loaded with the .338 | 225gr | Remington PSP. Norma 200 delivers the highest muzzle velocity at 1,893 fps; across all powders the maximum-charge window runs from 1,109 fps to 1,893 fps. Accurate 2015 gives the best case fill at 100 %, and 38 of the 38 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (359 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. Accurate 2015, Accurate 2460, Alliant AR-Comp reach 100 % fill or more at maximum charge, so these are compressed loads: they need a long drop tube to seat cleanly and react sensitively to the case capacity of your own brass lot. ADI AR 2207, Norma 200, Alliant Reloder-7 rank at the top here: for .338 ARC with the .338 | 225gr | Remington PSP they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 2015, Accurate 2460, Accurate LT-32 burn incompletely and react more sensitively to barrel length and temperature. Hodgdon TrailBoss, ReloadSwiss RS 14 stay subsonic at start load. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.